CN2543637Y

CN2543637Y - Drill for building engineering

Info

Publication number: CN2543637Y
Application number: CN 02239965
Authority: CN
Inventors: 唐亚风; 刘仲方; 徐斌
Original assignee: DANYANG LIKE TOOL Manufacturing Co Ltd
Current assignee: DANYANG LIKE TOOL Manufacturing Co Ltd
Priority date: 2002-06-14
Filing date: 2002-06-14
Publication date: 2003-04-09
Anticipated expiration: 2012-06-14

Abstract

The utility model relates to a drill for building engineering. The drill body with helix blade is incorporated with the drill handle; the drill body is fixedly connected with the drill bit made from solid tungsten alloy; the front section of the drill handle is round, while the rear section is regular hexagon shapeshank; the shank is provided with a concave ring slot which has a round transverse section and an arc vertical section. The drill bit is used for cutting into or hammering rapidly the various building material and stone while in the rotation; the helix drill body is used for discharging the detritus, the round handle is used for supporting the cutting depth, and the shank with regular hexagon or regular hexagon arc handle section can effectively prevent the drill handle to rotate reversely in the locking tool; the concave ring slot in the drill handle enables the drill to be locked in the locking tool; and the elastic fastening device on the locking tool can effectively avoid the drill for building engineering getting loose or even breaking off in the locking tool, the clamping is firm and steady. When the drill is matched with the locking tool, the assembly and the dismounted is extremely simple, only a push or pull on the drill for building engineering to make the drill move into the hole, the assembly is completed, and the drill is not necessary to be debugged or moved.

Description

Build worker's drill bit

Technical field

The utility model relate to a kind of be used for hand-held or electric bench drill or electric hammer brill build worker's rotary-cut cutlery, particularly a kind of tungsten hard alloy head is built worker's drill bit.

Background technology

At present, in the processing of construction material hole, the worker that builds who is used to hole bores, and its drillstock is generally cylindrical staight shank, and drillstock inserts in the centre bore of jig, needs by the special spanner installation, and comparatively trouble seems.While because jig to the grip deficiency of circular surface, skids easily, is caused drill handle part wearing and tearing or the phenomenon of drill chuck in drill point when boring when boring.

Technology contents

The utility model will improve the deficiency on the prior art, a kind of clamping firm stable is provided, is difficult for becoming flexible, and the worker that builds of easy accessibility bores.

The utility model is built the technical scheme of worker's drill bit: spiral tooth shape drill body and drillstock are integral, the fixedly connected tungsten carbide drill of spiral tooth shape drill body, it is characterized in that: the drillstock leading portion is the circle handle, back segment is the regular hexagon bone knob, on bone knob, also be provided with a spill annular groove, spill annular groove cross section is a garden shape, and the longitudinal section is an arc.

Above-mentioned spiral drill body diameter is Φ 2.9mm to Φ 11mm.

Above-mentioned round shank diameter is Φ 2.5mm to Φ 11mm.

The limit of above-mentioned regular hexagon bone knob is straight flange or circular arc limit.

Above-mentioned bone knob length is 25mm to 30mm, and the hexagon opposite side distance is from being of a size of 6.35mm to 11.12mm, 1/4 inch to 7/16 inch.

Above-mentioned curved inner radius is Φ 4.5mm to Φ 7mm, and the arc radius scope is R=3mm to R=6mm.

Beneficial effect: the tungsten carbide drill is used to rotate quick incision or clashes into all kinds of worker's of building materials and stone material.The auger body is used to discharge building materials or stone material is broken cuts.The circle handle is for supporting penetraction depth, and the round handle design of different length can adapt to the requirement of different drilling depths.Its distinctive regular hexagon of bone knob or positive six roundlet arc handle cage structures can effectively stop to be built worker's drillstock and relatively rotates in jig.After scrobicular ring on its handle makes it snap in the jig,, can avoid building the worker effectively and be drilled in the jig loosening even come off the clamping firm stable by the elasticity clamping device on the jig.In addition, when this novel worker of building bored the jig that matches with it and uses, loading and unloading were especially simply saved trouble, and only needed to build worker's drillstock and pushed away or one draw to the Kong Zhongyi of jig, can finish, and need not debugging and transfer rig.

Description of drawings

Fig. 1 is the schematic diagram of the utility model example I, the circle shank diameter greater than bone knob hexagon opposite side distance from size;

Fig. 2 is the schematic diagram of the utility model example II, and the circle shank diameter equals bone knob hexagon opposite side distance from size;

Fig. 3 is the schematic diagram of the utility model EXAMPLE III, the circle shank diameter less than bone knob hexagon opposite side distance from size.

Fig. 4 is the schematic diagram of the utility model EXAMPLE IV, the circle shank diameter less than bone knob hexagon opposite side distance from size.

Among the figure: 1-carbide bit, 2-spiral drill body, 3-circle handle, 4-bone knob, 5-spill annular groove.

The specific embodiment

Build that worker's drill bit is processed into spiral tooth shape drill body with the bulk metal rod and shank is integral, weld tungsten carbide drill 1 again and form.

Spiral drill body 2 diameters are Φ 2.9mm to Φ 11mm.

Circle handle 3 diameters are Φ 2.5mm to Φ 11mm.

The cross section of bone knob 4 is regular hexagon or positive six little circular arcs, and bone knob length is 25mm to 30mm, and the hexagon opposite side distance is from being of a size of 6.35mm to 11.12mm, 1/4 inch to 7/16 inch.

On bone knob, also be provided with a spill annular groove 5, as the lock in place body.Spill annular groove 5 cross sections are garden shape, and the longitudinal section is an arc, and curved inner radius is Φ 4.5mm to Φ 7mm, and the arc radius scope is R=3mm to R=6mm.

Claims

1, a kind of worker's drill bit of building, spiral tooth shape drill body and drillstock are integral, the fixedly connected tungsten carbide drill of spiral tooth shape drill body, it is characterized in that: the drillstock leading portion is the circle handle, back segment is the regular hexagon bone knob, also be provided with a spill annular groove on bone knob, spill annular groove cross section is a garden shape, and the longitudinal section is an arc.

2, the worker's drill bit of building according to claim 1 is characterized in that: described spiral drill body diameter is Φ 2.9mm to Φ 11mm.

3, the worker's drill bit of building according to claim 1 is characterized in that: described round shank diameter is Φ 2.5mm to Φ 11mm.

4, the worker's drill bit of building according to claim 1 is characterized in that: the limit of described regular hexagon bone knob is straight flange or circular arc limit.

5, the worker's drill bit of building according to claim 1, it is characterized in that: described bone knob length is 25mm to 30mm, the hexagon opposite side distance is from being of a size of 6.35mm to 11.12mm, 1/4 inch to 7/16 inch.

6, the worker's drill bit of building according to claim 1 is characterized in that: described curved inner radius is Φ 4.5mm to Φ 7mm, and the arc radius scope is R=3mm to R=6mm.